Développement de matériaux composites fibreux hautes perfomances à matrice bio-sourcée

Abstract : Changing our industrial activities towards sustainable development is one of the major human concerns of the 21th century. The use of biomass in various areas like energy, construction and materials is an answer to the future scarcity of fossil resources and to the ecological risks. The objectives of this thesis are to create new materials with the highest bio-based content possible and then to optimize these materials properties for a potential industrial use. The work presented here is about the fabrication of composite materials reinforced with natural fibers, using bio-based resins as a matrix. The main vegetable resources studied here are tannins, used to make: -Tannin – hexamine matrix composites -Tannin – resorcinol – aldehyde matrix composites Vegetable tannins were also studied to prepare tannin – furfuryl alcohol bio-plastics that may be used in the composites fabrication. The composites boards were made in laboratory and mechanically analyzed based on European norms methods. Resins were also characterized using various techniques such as thermomechanical analysis (TMA) or MALDI-ToF mass spectrometry. The end results of this work is the fabrication of highly bio-based composite materials, with homogenous and repeatable properties that furthermore satisfy several European norms requirements.
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Alix Sauget. Développement de matériaux composites fibreux hautes perfomances à matrice bio-sourcée. Autre. Université de Lorraine, 2014. Français. ⟨NNT : 2014LORR0085⟩. ⟨tel-01750808⟩

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